Toy-flying-machine motor



C. W. HUTCHINSON.

TOY FLYING MACHINE M'OTOR.

APPLICATION man APR. 19. 1920.

Patented Jan. 18, 1921.

25 W- HuTchins an Char PATENT OFFICE.

CHARLES W. HUTCHINSON, OF MILWAUKEE, WISCONSIN.

TOY-FLYING-MACHINE MOTOR.

Specification of Letters Patent.

Patented Jan. 18, 1921.

Application filed April 19, 1920. Serial No. 374,953.

To all whom it may concern: 7

Be it known that I, CHARLES W. HUTCH- trNsoN, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have 1nvented certain new and useful Improvenients in Toy-Flying-Machine Motors; and I do hereby declare that the followlng 1s a full, clear, and exact description thereof.

My invention refers to mechanism for winding elastic straps utillzed as motors for flying machines or other self propelled toys.

The invention has for its prlmary object to provide a simple mechanism and effective means for distending such straps or bands so as to increase the life of the same by avoiding twisting action or coiling of the same.

Other objects of my invention are:

To provide means for readily replacing the worn endless bands or straps;

To provide grips for the ends of the bands with brackets whereby said grips will resist cutting or wear at these points ofstrain;

To provide a toy vehicle having a reach rod or frame which has attached at one end a drum driven gear train unit and drive, and to the other end of the frame is attached one ora plurality of endless resilient bands having a flexible runner connecting these bands and drum whereby the flexible runner only will be wound upon the drum when the bands are distended;

To provide a tough flexible runner such as cat-gut or the like as a part of a resilient strap, the flexible portion being adapted for winding about the drum, whereby the resilient portion of this strap is subjected only to a working strain in a straight line, thus avoiding twisting of the resilient material or coiling of the same which would result in deterioration after slight usage.

With the above and other objects in view, the invention consists in certain peculiarities of construction and combination of parts which are fully set forth hereinafter with reference to the accompanying illustration and subsequently claimed.

The drawing illustrates an elevation of a flying toy embodying the essential features of my invention, parts being broken away and in section to more clearly illustrate certain structural features.

Referring by characters to the drawing, 1 indicates a longitudinally disposed reach bar which constitutes the frame member and has attached thereto a suitable horizontally disposed wing or plane 2 and a vane 3 at its rear end. The structure is also provided with a tail foot 4: and a forwardly positioned frame carrying supports for wheels 5. These elements may be of any type and constitute no part in my invention.

Mounted upon the forward end of the reach bar is a bracket 6 having a socket portion 7 which is fixed to the end of said reach bar and the bracket also forms journal bearings for the horizontally disposed short shaft 8, the outer end of which carries a wheel 9 of the propeller type. bracket is also provided with vertically disposed bearings 10l0 having a drum shaft .11, which drum shaft extends through the reach bar and carries a beveled gear wheel 12 that is meshed with a pinion 13 secured to the inner end of the wheel shaft. The upper end of the shaft 11 is provided with a suitable winding key 13' and the lower end has secured thereto a drum 4, the same having secured thereto one end of a flexible non-resilient runner 14, the same being preferably composed of some tough material such, for example, as cat-gut, wire or the l ke. The opposite end of this runner carrles a metallic book 15 that is protected by a sheathing 15 which sheathing is of some soft material to prevent abrasion or wear. Another hook 16 provided with a sheath mg 16' secured to the rear end of the reach bar by means of a thimble connection 17 and th1s pair of hooks are adapted to receive one of a series of resilient strips 18 which are preferably in the form of endless rubber bands. The normal length of these bands 1s conslderably less than the distance be tween the rear anchor hook 16 and the drum 14 which is attached to the forwardly positioned train of gears. I

Thus it will be seen that these rubber bands constitute a motive force whereby their contractile energy is imparted to the drum, and through its gear connection rapid rotation of the propeller wheel is had. The primary idea in this construction is to arrange a means for distending the bands in a straight line so as to avoid twisting of the same or winding them about the drum or other element whereby they would become deteriorated. In other words, it is a well known face that rubber bands stand a great The amount of wear if they are simply distended and contracted, whereas under other conditions they will quickly deteriorate.

In the exemplilication of my invention, as shown, the bands are only subjected to contraction and expansion in a. straight line and since it is desired to wind the motor, the shaft 11 is simply revolved by hand, whereby the tough cat-gut, or other runner only is wound upon the drum while the bands are extended their full length. Hence it Will be seen that owing to the tough ma terial, from which the runner section of the flexible strap is made, that said runner will last indefinitely, while the life of the bands, which are only stretched in a st aight line, will be increased materially.

Further it is manifest that the bands can be renewed readily by simply assembling the. new set upon the hooks which are readily accessible and that this nenewal of the bands nected directly to the drum shaft.

I claim:

1. In a flying toy having a reach bar provided with horizontally disposed forward sustaining wings, and a vertically disposed guide vane at its rear end; the combination of a propelling mechanism comprising a bracket mounted at the forward end of the reach bar, a propeller shaft journaled in the bracket, a drum having its shaft journaled in said bracket and in gear connection with the propeller shaft. a :trap connected to the drum at its forward end and to the reach bar at its rear end. the said strap being composed of a resilient rrcxion and a non-resilient flexible section. the f exible section being adapted for windingabout the drum, whereby the resilient riction may be fully distended between the drum and its rear anchored point for applying; power to said drum, incidental to the resilient. section being: contracted to its normal length.

E2. In a flying toy having a reach bar provided with horizontally disposed forward sustainingwings and a. vertically disposed guide vane at its rear end; the conlhiinuaion of a propelling; mechanism coinprir 1;: a thinible socket-ed upon the rear end oi the reach bar and having a hook extending; therefrom, a. bracket having a body socket fitted to the front end of said reach bar. a horizontally disposed propeller shaft jour naled in the brack t, a vertically d spoz-icd drum carrying shaft ournaled in said CHARLES \V. HUTCHINSON. 

